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Schmidt Rubin 1898 looking for info

CHEVELLE427
PICKED up a swiss made in 1993 1893

so far i see i can cant fire 7.5x55 ammo unless i reload it to below
K11 AND K31 PRESSURES,

is the 7.5x55 brass usable in this 1889 or will it have to be trimmed some.

still searching for info but thought i would ask here as well.

i have loaded for K11 AND K31. using 284 win brass.

just looking for some more info


it was late last night[|)]
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Comments

5 comments

Date Votes
  • MIKE WISKEY
    you can use the 7.5x55 brass but factory loads are to heavy for your rifle. Check the reloading data for the 7.5 and use STARTING loads only
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  • jonk
    Hi Chevelle,

    I think you have a few mis-types but from what I gather, you have a Swiss 1889 made in 1893, right?

    This gun is chambered for 7.5X53.5, a direct predecessor of and VERY similar round to the 7.5X55. In fact, other than loading pressure, the only difference between the 2 is 1.5mm of neck length.

    I would recommend making a chamber cast with cerrosafe or similar. If yours was cut a bit deep, you might be able to use 7.5X55 brass as is. Otherwise it's easy enough, just trim 1.5mm off the existing 7.5 case. Standard 7.5X55 dies are used, though the seating die may need to be set slightly deeper.

    I also think you meant to say you can'T fire 7.5X55 ammo unless loaded below K11/31 pressures. This is true enough. It is a lower pressure round. swissrifles.com has some data for it but it is in the 30/40 Krag range. A fine rifle that should be limited to 35,000 psi or so.

    I personally load cast lead in mine but jacketed would be fine with the loads listed on the website referenced above.
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  • CHEVELLE427
    quote:Originally posted by jonk
    Hi Chevelle,

    I think you have a few mis-types but from what I gather, you have a Swiss 1889 made in 1893, right?

    This gun is chambered for 7.5X53.5, a direct predecessor of and VERY similar round to the 7.5X55. In fact, other than loading pressure, the only difference between the 2 is 1.5mm of neck length.

    I would recommend making a chamber cast with cerrosafe or similar. If yours was cut a bit deep, you might be able to use 7.5X55 brass as is. Otherwise it's easy enough, just trim 1.5mm off the existing 7.5 case. Standard 7.5X55 dies are used, though the seating die may need to be set slightly deeper.

    I also think you meant to say you can'T fire 7.5X55 ammo unless loaded below K11/31 pressures. This is true enough. It is a lower pressure round. swissrifles.com has some data for it but it is in the 30/40 Krag range. A fine rifle that should be limited to 35,000 psi or so.

    I personally load cast lead in mine but jacketed would be fine with the loads listed on the website referenced above.


    found some good info last night about what you have stated.

    just for giggles and grins i tried some GP11 to see if it would chamber and they did, however my reloads for the K11 & K31 did not
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  • sandwarrior
    quote:Originally posted by CHEVELLE427
    quote:Originally posted by jonk
    Hi Chevelle,

    I think you have a few mis-types but from what I gather, you have a Swiss 1889 made in 1893, right?

    This gun is chambered for 7.5X53.5, a direct predecessor of and VERY similar round to the 7.5X55. In fact, other than loading pressure, the only difference between the 2 is 1.5mm of neck length.

    I would recommend making a chamber cast with cerrosafe or similar. If yours was cut a bit deep, you might be able to use 7.5X55 brass as is. Otherwise it's easy enough, just trim 1.5mm off the existing 7.5 case. Standard 7.5X55 dies are used, though the seating die may need to be set slightly deeper.

    I also think you meant to say you can'T fire 7.5X55 ammo unless loaded below K11/31 pressures. This is true enough. It is a lower pressure round. swissrifles.com has some data for it but it is in the 30/40 Krag range. A fine rifle that should be limited to 35,000 psi or so.

    I personally load cast lead in mine but jacketed would be fine with the loads listed on the website referenced above.


    found some good info last night about what you have stated.

    just for giggles and grins i tried some GP11 to see if it would chamber and they did, however my reloads for the K11 & K31 did not




    Chevelle427,

    For the most all 7.5 Swiss ammo cases will interchange. What you DO NOT want to do is fire that GP11 through that rifle. The pressure will be too high for that rifle.

    As you noted your reloads won't work in that rifle. But, if you were to take new unfired 7.5x55 brass it would fit as well as the GP11. The K-31 has a roomier chamber than the original chamber. It was one of those 'improvements the Swiss came up with during the time they tested the K-31. It's about .475" at the shoulder instead of .460". The reason is in case a soldier was to get dirt in the chamber the rifle would still fire. Remember though that at the time the Swiss weren't all about picking up the brass to reload with it. They would take it straight in to salvage. So, how it came out of the rifle didn't matter as long as it came out.

    Just for giggles try loading a freshly fired GP11 round that did fit before firing, into your 1889 rifle. After being fired through the K-31 it won't fit.

    So, to answer another question you may have, yes there is that difference in your 1889 rifle vs. a K-31 rifle chamber. That is not a fluke.
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  • CHEVELLE427
    quote:Originally posted by sandwarrior
    quote:Originally posted by CHEVELLE427
    quote:Originally posted by jonk
    Hi Chevelle,

    I think you have a few mis-types but from what I gather, you have a Swiss 1889 made in 1893, right?

    This gun is chambered for 7.5X53.5, a direct predecessor of and VERY similar round to the 7.5X55. In fact, other than loading pressure, the only difference between the 2 is 1.5mm of neck length.

    I would recommend making a chamber cast with cerrosafe or similar. If yours was cut a bit deep, you might be able to use 7.5X55 brass as is. Otherwise it's easy enough, just trim 1.5mm off the existing 7.5 case. Standard 7.5X55 dies are used, though the seating die may need to be set slightly deeper.

    I also think you meant to say you can'T fire 7.5X55 ammo unless loaded below K11/31 pressures. This is true enough. It is a lower pressure round. swissrifles.com has some data for it but it is in the 30/40 Krag range. A fine rifle that should be limited to 35,000 psi or so.

    I personally load cast lead in mine but jacketed would be fine with the loads listed on the website referenced above.


    found some good info last night about what you have stated.

    just for giggles and grins i tried some GP11 to see if it would chamber and they did, however my reloads for the K11 & K31 did not




    Chevelle427,

    For the most all 7.5 Swiss ammo cases will interchange. What you DO NOT want to do is fire that GP11 through that rifle. The pressure will be too high for that rifle.

    As you noted your reloads won't work in that rifle. But, if you were to take new unfired 7.5x55 brass it would fit as well as the GP11. The K-31 has a roomier chamber than the original chamber. It was one of those 'improvements the Swiss came up with during the time they tested the K-31. It's about .475" at the shoulder instead of .460". The reason is in case a soldier was to get dirt in the chamber the rifle would still fire. Remember though that at the time the Swiss weren't all about picking up the brass to reload with it. They would take it straight in to salvage. So, how it came out of the rifle didn't matter as long as it came out.

    Just for giggles try loading a freshly fired GP11 round that did fit before firing, into your 1889 rifle. After being fired through the K-31 it won't fit.

    So, to answer another question you may have, yes there is that difference in your 1889 rifle vs. a K-31 rifle chamber. That is not a fluke.


    sandwarrior you have mail
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